<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">权限管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>

    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>

      <el-table :data="roleList" border stripe>
<!--        展开列-->
        <el-table-column type="expand">
            <template slot-scope="scope">


                <el-row :class="['bdbottom',i1===0 ? 'bdtop':'']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                  <el-col :span="5">
                    <el-tag
                        closable
                        @close="removeRightById(scope.row,item1.id)">
                      {{item1.authName}}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>

                  </el-col>
                  <el-col :span="19">
                    <el-row :class="[i2===0?'':'bdtop']" v-for="(item2,i2) in item1.children" :key="item2.id">
                      <el-col :span="6">
                        <el-tag type="success"
                                closable
                                @close="removeRightById(scope.row,item2.id)"
                          >{{item2.authName}}</el-tag>
                        <i class="el-icon-caret-right"></i>

                      </el-col>
                      <el-col :span="18">
                        <el-tag  type="warning"
                                 v-for="(item3,i3) in item2.children"
                                 :key="item3.id"
                                 closable
                                 @close="removeRightById(scope.row,item3.id)"
                        >{{item3.authName}}</el-tag>
                      </el-col>
                    </el-row>
                  </el-col>
                </el-row>
              <pre>

              </pre>

            </template>
        </el-table-column>

        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" >
            <template slot-scope="scope">
              <el-button type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
              <el-button type="danger" icon="el-icon-delete" size="mini">删除</el-button>
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
            </template>
        </el-table-column>
      </el-table>

    </el-card>

<!--    分配权限-->
            <el-dialog
                title="提示"
                :visible.sync="setRightDialogVisible"
                width="50%"
                @close="setRightDialogClosed"
                >
              <el-tree :data="rightsList" :props="treeProps" show-checkbox
                       default-expand-all
                       :default-checked-keys="defKeys"
                       node-key="id"
                       ref="treeRef"
              ></el-tree>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="setRightDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="allotRights">确 定</el-button>
                 </span>
            </el-dialog>

  </div>
</template>

<script>
export default {
  name: "Roles",
  data() {
    return {
      //所有角色列表数据
      roleList:[],
      setRightDialogVisible:false,
      rightsList:[],

      treeProps:{
        label:'authName',
        children:'children'
      },
      defKeys:[],
      //即将分配权限的id
      roleId:''
    }
  },
  created() {
    this.getRolesList()
  },
  methods:{
    async getRolesList() {
     const{data:res}= await this.$http.get('roles')

      if(res.meta.status !==200){
        return this.$message.error('获取角色列表失败')
      }
      this.roleList=res.data;
      console.log(this.roleList)
    },
   async removeRightById(role,rightid) {
     const confirmResult =await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err=>err)

     if(confirmResult !=='confirm'){
       return this.$message.info('已取消删除')
     }
     const {data:res}=await this.$http.delete(`roles/${role.id}/rights/${rightid}`)
      if(res.meta.status !==200) {
          return this.$message.error('删除权限失败！')
      }

      role.children=res.data
    },
    //展示分配权限的对话框
    async showSetRightDialog(role){

      this.roleId=role.id
        //获取所有权限的数据
      const {data:res}=await this.$http.get('rights/tree')

      if(res.meta.status !== 200){
        return this.$message.error('获取权限数据失败')
      }

      this.rightsList=res.data;

      //递归获取三级节点的id
      this.getLeafKeys(role,this.defKeys)
      this.setRightDialogVisible=true;
    },

    //通过递归的形式，获取角色下所有的三级权限的id，并保存到defkeys 数组中
    getLeafKeys(node,arr) {
      if(!node.children) {
          return arr.push(node.id)
      }

      node.children.forEach(item =>this.getLeafKeys(item,arr))
    },
  //监听分配权限对话框的关闭事件
    setRightDialogClosed() {
        this.defKeys=[]
    },

   async allotRights() {
      const keys=[
        this.$refs.treeRef.getCheckedKeys(),
        this.$refs.treeRef.getHalfCheckedKeys()
      ]
      console.log(keys)
      const idStr=keys.join(',')
      const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})

      if(res.meta.status !==200) {
        return this.$message.error('分配权限失败！')
      }
      this.$message.success('分配权限成功')
      this.getRolesList();
      this.setRightDialogVisible=false;
    }
  }
}
</script>

<style scoped lang="less">
.el-tag{
  margin: 7px;
}
.bdtop{
  border-top:1px solid #eee;
}

.bdbottom{
  border-bottom: 1px solid #eee;
}
</style>
